TM 5-5420-280-10
0038 00
Pallet Electrical Troubleshooting (Contd)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
41. RCU WILL NOT RETRIEVE LOWER BRIDGE HALF (R17-H)
Step 1. Check that KY1 and KY7 hydraulic control valve solenoid LED
lights are lit when action button 2 is depressed.
a. If all lights are lit on control valve solenoids, check limit switch
KA3 for damage or out of adjustment. If limit switch KA3 is
damaged or out of adjustment, notify field maintenance.
b. If limit switch KA3 is operating and control valve solenoid LED
lights are lit, notify field maintenance.
Step 2. Check to see if one or more control valve solenoid LED lights are out
when action button 2 is depressed.
If light is out, notify field maintenance.
END OF TESTING
42. RCU WILL NOT LOWER SECONDARY BOOM (R14-H)
Step 1. Check that KY1 and KY14 hydraulic control valve solenoid LED
lights are lit when action button 2 is depressed.
If both lights are lit on control valve solenoids, notify field
maintenance.
Step 2. Check to see if one or more control valve solenoid LED lights are out
when action button 2 is depressed.
If light is out, notify field maintenance.
END OF TESTING
43.
RCU WILL NOT RAISE LAUNCH BOOM TO TRAVEL POSITION (R16-A)
Step 1. Check that KY1 and KY19 hydraulic control valve solenoid LED
lights are lit when action button 2 is depressed.
If both lights are lit on control valve solenoids, notify field
maintenance.
Step 2. Check to see if one or more control valve solenoid LED lights are out
when action button 2 is depressed.
If light is out, notify field maintenance.
END OF TESTING